Timeline for Practical ways to obtain Bode plots for an unknown circuit
Current License: CC BY-SA 3.0
30 events
| when toggle format | what | by | license | comment | |
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| Apr 7, 2019 at 4:36 | comment | added | Unknown123 | @user16307 Have you found the answer yet? | |
| Apr 6, 2019 at 13:02 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Mar 26, 2019 at 0:44 | comment | added | Chu | An impulse might be an impractical input signal, but the unit impulse response is the derivative of the unit step response, which is highly practical, and readily obtained. The unit impulse response is the fundamental system input/output relationship, from which all else can be derived. | |
| Mar 5, 2019 at 19:40 | answer | added | BHS | timeline score: 0 | |
| Dec 25, 2018 at 18:03 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Nov 23, 2018 at 7:02 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Oct 16, 2018 at 12:21 | answer | added | Sven B | timeline score: 0 | |
| Sep 18, 2018 at 20:38 | answer | added | divB | timeline score: 0 | |
| Sep 17, 2018 at 18:00 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Aug 14, 2018 at 21:03 | answer | added | Arjo van der Ham | timeline score: 0 | |
| Jul 11, 2018 at 3:08 | comment | added | Criticizing Israel not allowed | One idea I've heard is to generate a frequency sweep as the input and a slow oscilloscope trace (not looking at the waveform, just the envelope) and record the output envelope on the scope. | |
| Jul 11, 2018 at 2:32 | answer | added | Tony | timeline score: 0 | |
| Jun 24, 2018 at 19:07 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| May 23, 2018 at 5:10 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Apr 23, 2018 at 0:45 | answer | added | τεκ | timeline score: 0 | |
| Apr 22, 2018 at 23:39 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Nov 15, 2017 at 20:33 | comment | added | John D | @jonk Oh, sure, I can see how you would have thought that, sorry for not being clear. | |
| Nov 15, 2017 at 19:48 | comment | added | jonk | @JohnD Okay. Thanks. I thought you were selling yours at that price. I misread things. | |
| Nov 15, 2017 at 16:17 | history | tweeted | twitter.com/StackElectronix/status/930832126869671937 | ||
| Nov 15, 2017 at 15:34 | comment | added | John D | @jonk I was very familiar with the HP 3562A, so I kept bidding on them when they came up for auction on Ebay. Eventually I scored one for $400, so it is possible. Currently there are several, though the prices are higher: ebay.com/sch/… | |
| Nov 15, 2017 at 8:43 | answer | added | Marko Buršič | timeline score: 1 | |
| Nov 15, 2017 at 1:33 | comment | added | jonk | @JohnD Hate to ask, but I'm actually kind of in the market for such a unit as you have (but since it's for hobby work I couldn't consider the prices I was saw so it wound up as a wish list item instead.) You wouldn't happen to have a search criteria or a link I might use to see the offering, would you? | |
| Nov 15, 2017 at 1:20 | answer | added | The Photon | timeline score: 0 | |
| Nov 15, 2017 at 1:08 | comment | added | user16307 | @ThePhoton I'm only interested fn up to 1kHz. I mean it is enough to obtain the Bode plot points up to 1000Hz. Here is the daq device I can use: mccdaq.com/usb-data-acquisition/USB-1616FS.aspx | |
| Nov 15, 2017 at 1:04 | comment | added | The Photon | And what band of frequencies do you think your filter might cover? Answers will be different for 100 Hz and 100 MHz. | |
| Nov 15, 2017 at 1:02 | comment | added | The Photon | What do you mean by "PC data acquisition system"? A model number would let us know what capabilities you have available. | |
| Nov 15, 2017 at 0:46 | comment | added | John D | I got a working HP 3562A dynamic signal analyzer for $400 on ebay. It's only good to 100kHz, but for my home lab it was good enough. There's also the option to rent an instrument for a short time. You could make your own with a computer-controlled signal generator and data acquisition system, but the time it would take to do it right might make buying an off-the-shelf unit look like a bargain. | |
| Nov 15, 2017 at 0:37 | comment | added | user16307 | Never used any and I don't have any. They are very expensive. But thanks for mentioning the proper method. | |
| Nov 15, 2017 at 0:33 | comment | added | John D | Use a network analyzer, there are models by Keysight, AP instruments, Venable, etc. that will automatically sweep frequency and plot gain/phase or Nyquist plots. You can link these to a PC to automate the process and download the data points. | |
| Nov 15, 2017 at 0:25 | history | asked | user16307 | CC BY-SA 3.0 |